This is exactly what I am doing, but restored signal looks very weird (its real part is close to zero). I have attached example *grc file showing the problem.
Dnia 31 stycznia 2018 12:34 Jeff Long
<willco...@gmail.com> napisał(a):
If you put 0 in the manual fields and wire
src->optimize->iqbal
and
src->iqbal
it seems to work fine. Do you have a GRC file?
"period" is some sort of time constant, in samples. If you set it to
samp_rate, optimization will happen within a second. Smaller values for
faster response up to a point.
On 01/31/2018 05:54 AM, kokosz wrote:
Dear all,
It looks like IQ imbalance is causing problems in my application, as I
was able to simulate real-world-like problems after adding "IQ Imbalance
Generator" to my GRC flowgraph. So, after simulating this imbalance, I
wanted to get rid of it with the help of "IQ Bal Optimize" and "IQ
Bal
Fix" combo. Unfortunately, I can't get it work.
As far as I understand, "IQ Bal Optimize" is automatically detecting
settings (i.e. magnitude and phase correction values) for "IQ Bal Fix"
and pass it to the latter block via message connection called
"iqbal_corr". Is this is true, I don't understand why I have to
manually
set "Magnitude" and "Phase" in "IQ Bal Fix" (otherwise
I cannot run the
flowgraph because of empty fields). I think that these fields were meant
for making manual fix possible, but when using "IQ Bal
Optimize"/"IQ Bal
Fix" combo, message connection should be all what is necessary, right?
Also, because of lack of detailed documentation, I am not sure how to
interpret "Period" field in IQ Bal Optimize - what units are expected
here?
I am using GRC v3.7.11, compiled from source files few days ago.
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iqbal_test.grc
Description: application/gnuradio-grc
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